the congregation disagreed with tamerlan and he was quote, shouted out of the mosque. speculation continues about why these two young men may have conspired to kill en masse, as the country marks a week since the deadly bombing. in medford, massachusetts, the funeral for 29-year-old victim, krystle campbell began just over an hour ago and at 2:50 p.m., president obama will join the city of boston in a moment of silence, mayor menino will observe the time from boston common. joining me washington bureau chief of the the "huffington post," graham, and the grio editor, joy reid and the deputy director of the "national journal." >> and pete, there's a lot of information that's come out over course of the weekend. we know that the fbi is interrogating dzhokhar tsarnaev. what are they hoping to get from him at this point? >> interrogating may be a bit of a grand word here, because it's certainly not the kind of interrogation they had planned, where they speak to someone. it's being conducted with notes and nods and because he can't speak, he's on a ventilator. so it's a very